1551405211002 has 48 divisors (see below), whose sum is σ = 3426807763080. Its totient is φ = 507080386176.

The previous prime is 1551405210989. The next prime is 1551405211039. The reversal of 1551405211002 is 2001125041551.

It is a happy number.

1551405211002 is a `hidden beast` number, since 1 + 551 + 4 + 0 + 5 + 2 + 1 + 100 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1151691702561 + 399713508441 = 1073169^2 + 632229^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1154608 + ... + 2106164.

Almost surely, 2^{1551405211002} is an apocalyptic number.

1551405211002 is an abundant number, since it is smaller than the sum of its proper divisors (1875402552078).

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

1551405211002 is a wasteful number, since it uses less digits than its factorization.

1551405211002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953327 (or 953324 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

The spelling of 1551405211002 in words is "one trillion, five hundred fifty-one billion, four hundred five million, two hundred eleven thousand, two".