49817145620 has 96 divisors (see below), whose sum is σ = 116313684480. Its totient is φ = 17771120640.

The previous prime is 49817145613. The next prime is 49817145647. The reversal of 49817145620 is 2654171894.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2719532 + ... + 2737788.

It is an arithmetic number, because the mean of its divisors is an integer number (1211600880).

Almost surely, 2^49817145620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49817145620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58156842240).

49817145620 is an abundant number, since it is smaller than the sum of its proper divisors (66496538860).

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

49817145620 is a wasteful number, since it uses less digits than its factorization.

49817145620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18513 (or 18511 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 49817145620 in words is "forty-nine billion, eight hundred seventeen million, one hundred forty-five thousand, six hundred twenty".