1540426680680 has 32 divisors (see below), whose sum is σ = 3469912174440. Its totient is φ = 615468069120.

The previous prime is 1540426680659. The next prime is 1540426680691. The reversal of 1540426680680 is 860866240451.

It can be written as a sum of positive squares in 4 ways, for example, as 1319231422084 + 221195258596 = 1148578^2 + 470314^2 .

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 7 ways as a sum of consecutive naturals, for example, 21920831 + ... + 21990990.

Almost surely, 2^{1540426680680} is an apocalyptic number.

1540426680680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1540426680680 is an abundant number, since it is smaller than the sum of its proper divisors (1929485493760).

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

1540426680680 is a wasteful number, since it uses less digits than its factorization.

1540426680680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43912709 (or 43912705 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 50.

The spelling of 1540426680680 in words is "one trillion, five hundred forty billion, four hundred twenty-six million, six hundred eighty thousand, six hundred eighty".