651015045478 has 32 divisors (see below), whose sum is σ = 1212659619840. Its totient is φ = 255795382080.

The previous prime is 651015045397. The next prime is 651015045479. The reversal of 651015045478 is 874540510156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651015045479) 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, 39466351 + ... + 39482842.

It is an arithmetic number, because the mean of its divisors is an integer number (37895613120).

Almost surely, 2^651015045478 is an apocalyptic number.

651015045478 is a deficient number, since it is larger than the sum of its proper divisors (561644574362).

651015045478 is a wasteful number, since it uses less digits than its factorization.

651015045478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78949252.

The product of its (nonzero) digits is 672000, while the sum is 46.

The spelling of 651015045478 in words is "six hundred fifty-one billion, fifteen million, forty-five thousand, four hundred seventy-eight".