1551161001505 has 16 divisors (see below), whose sum is σ = 1863990144000. Its totient is φ = 1239198537280.

The previous prime is 1551161001449. The next prime is 1551161001521. The reversal of 1551161001505 is 5051001611551.

It is not a de Polignac number, because 1551161001505 - 2³³ = 1542571066913 is a prime.

It is a super-2 number, since 2×1551161001505² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12304131 + ... + 12429559.

It is an arithmetic number, because the mean of its divisors is an integer number (116499384000).

Almost surely, 2^{1551161001505} is an apocalyptic number.

It is an amenable number.

1551161001505 is a deficient number, since it is larger than the sum of its proper divisors (312829142495).

1551161001505 is a wasteful number, since it uses less digits than its factorization.

1551161001505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128864.

The product of its (nonzero) digits is 3750, while the sum is 31.

The spelling of 1551161001505 in words is "one trillion, five hundred fifty-one billion, one hundred sixty-one million, one thousand, five hundred five".