260407502478 has 80 divisors (see below), whose sum is σ = 586593143136. Its totient is φ = 86343978240.

The previous prime is 260407502471. The next prime is 260407502519. The reversal of 260407502478 is 874205704062.

It is a happy number.

260407502478 is a `hidden beast` number, since 2 + 60 + 40 + 7 + 502 + 47 + 8 = 666.

It is a super-2 number, since 2×260407502478² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260407502471) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 46160538 + ... + 46166178.

Almost surely, 2^260407502478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 260407502478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293296571568).

260407502478 is an abundant number, since it is smaller than the sum of its proper divisors (326185640658).

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

260407502478 is a wasteful number, since it uses less digits than its factorization.

260407502478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7111 (or 7102 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 45.

The spelling of 260407502478 in words is "two hundred sixty billion, four hundred seven million, five hundred two thousand, four hundred seventy-eight".