1551481296507 has 32 divisors (see below), whose sum is σ = 2320535900160. Its totient is φ = 1024405276320.

The previous prime is 1551481296439. The next prime is 1551481296571. The reversal of 1551481296507 is 7056921841551.

1551481296507 is a `hidden beast` number, since 1 + 5 + 5 + 1 + 4 + 8 + 129 + 6 + 507 = 666.

It is not a de Polignac number, because 1551481296507 - 2¹² = 1551481292411 is a prime.

It is a super-2 number, since 2×1551481296507² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1551481296587) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12223782 + ... + 12350052.

It is an arithmetic number, because the mean of its divisors is an integer number (72516746880).

Almost surely, 2^{1551481296507} is an apocalyptic number.

1551481296507 is a deficient number, since it is larger than the sum of its proper divisors (769054603653).

1551481296507 is a wasteful number, since it uses less digits than its factorization.

1551481296507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130640 (or 130634 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 54.

The spelling of 1551481296507 in words is "one trillion, five hundred fifty-one billion, four hundred eighty-one million, two hundred ninety-six thousand, five hundred seven".