51078341690 has 32 divisors (see below), whose sum is σ = 93370582656. Its totient is φ = 20115950400.

The previous prime is 51078341647. The next prime is 51078341693. The reversal of 51078341690 is 9614387015.

It is a super-2 number, since 2×51078341690² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51078341693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34865 + ... + 321515.

It is an arithmetic number, because the mean of its divisors is an integer number (2917830708).

Almost surely, 2^51078341690 is an apocalyptic number.

51078341690 is a deficient number, since it is larger than the sum of its proper divisors (42292240966).

51078341690 is a wasteful number, since it uses less digits than its factorization.

51078341690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286934.

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 51078341690 in words is "fifty-one billion, seventy-eight million, three hundred forty-one thousand, six hundred ninety".