1551315062440 has 384 divisors, whose sum is σ = 4281691790880. Its totient is φ = 502078832640.

The previous prime is 1551315062419. The next prime is 1551315062489. The reversal of 1551315062440 is 442605131551.

It can be written as a sum of positive squares in 16 ways, for example, as 115876244836 + 1435438817604 = 340406^2 + 1198098^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a self number, because there is not a number n which added to its sum of digits gives 1551315062440.

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 95 ways as a sum of consecutive naturals, for example, 263065572 + ... + 263071468.

Almost surely, 2^{1551315062440} is an apocalyptic number.

1551315062440 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 1551315062440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2140845895440).

1551315062440 is an abundant number, since it is smaller than the sum of its proper divisors (2730376728440).

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

1551315062440 is a wasteful number, since it uses less digits than its factorization.

1551315062440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6093 (or 6078 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 37.

The spelling of 1551315062440 in words is "one trillion, five hundred fifty-one billion, three hundred fifteen million, sixty-two thousand, four hundred forty".