49815000000 has 672 divisors, whose sum is σ = 189606545856. Its totient is φ = 12960000000.

The previous prime is 49814999981. The next prime is 49815000019. The reversal of 49815000000 is 51894.

It is an interprime number because it is at equal distance from previous prime (49814999981) and next prime (49815000019).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Saint-Exupery number, since it is equal to the product of the sides of a Pythagorean triangle: 6150 × 1350 × 6000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1214999980 + ... + 1215000020.

It is an arithmetic number, because the mean of its divisors is an integer number (282152598).

Almost surely, 2^49815000000 is an apocalyptic number.

49815000000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49815000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94803272928).

49815000000 is an abundant number, since it is smaller than the sum of its proper divisors (139791545856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49815000000 is an frugal number, since it uses more digits than its factorization.

49815000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103 (or 51 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

Adding to 49815000000 its reverse (51894), we get a palindrome (49815051894).

The spelling of 49815000000 in words is "forty-nine billion, eight hundred fifteen million", and thus it is an aban number.