1551511551002 has 16 divisors (see below), whose sum is σ = 2659820456832. Its totient is φ = 664911929520.

The previous prime is 1551511550957. The next prime is 1551511551013. The reversal of 1551511551002 is 2001551151551.

It is a self number, because there is not a number n which added to its sum of digits gives 1551511551002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1348949 + ... + 2218712.

It is an arithmetic number, because the mean of its divisors is an integer number (166238778552).

Almost surely, 2^{1551511551002} is an apocalyptic number.

1551511551002 is a deficient number, since it is larger than the sum of its proper divisors (1108308905830).

1551511551002 is a wasteful number, since it uses less digits than its factorization.

1551511551002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3598733.

The product of its (nonzero) digits is 6250, while the sum is 32.

The spelling of 1551511551002 in words is "one trillion, five hundred fifty-one billion, five hundred eleven million, five hundred fifty-one thousand, two".