1551338534460 has 192 divisors, whose sum is σ = 5104351042560. Its totient is φ = 347070597120.

The previous prime is 1551338534413. The next prime is 1551338534497. The reversal of 1551338534460 is 644358331551.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 40813224 + ... + 40851216.

It is an arithmetic number, because the mean of its divisors is an integer number (26585161680).

Almost surely, 2^{1551338534460} is an apocalyptic number.

1551338534460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1551338534460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2552175521280).

1551338534460 is an abundant number, since it is smaller than the sum of its proper divisors (3553012508100).

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

1551338534460 is a wasteful number, since it uses less digits than its factorization.

1551338534460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42788 (or 42786 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 48.

The spelling of 1551338534460 in words is "one trillion, five hundred fifty-one billion, three hundred thirty-eight million, five hundred thirty-four thousand, four hundred sixty".