1551055612400 has 60 divisors (see below), whose sum is σ = 4258755560592. Its totient is φ = 531790494720.

The previous prime is 1551055612373. The next prime is 1551055612451. The reversal of 1551055612400 is 42165501551.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 276971417 + ... + 276977016.

Almost surely, 2^{1551055612400} is an apocalyptic number.

1551055612400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1551055612400 is an abundant number, since it is smaller than the sum of its proper divisors (2707699948192).

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

1551055612400 is a wasteful number, since it uses less digits than its factorization.

1551055612400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553948458 (or 553948447 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 35.

The spelling of 1551055612400 in words is "one trillion, five hundred fifty-one billion, fifty-five million, six hundred twelve thousand, four hundred".