51511013390 has 8 divisors (see below), whose sum is σ = 92719824120. Its totient is φ = 20604405352.

The previous prime is 51511013347. The next prime is 51511013399. The reversal of 51511013390 is 9331011515.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51511013399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2575550660 + ... + 2575550679.

It is an arithmetic number, because the mean of its divisors is an integer number (11589978015).

Almost surely, 2^51511013390 is an apocalyptic number.

51511013390 is a deficient number, since it is larger than the sum of its proper divisors (41208810730).

51511013390 is a wasteful number, since it uses less digits than its factorization.

51511013390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5151101346.

The product of its (nonzero) digits is 2025, while the sum is 29.

The spelling of 51511013390 in words is "fifty-one billion, five hundred eleven million, thirteen thousand, three hundred ninety".