1251540454010 has 128 divisors (see below), whose sum is σ = 2902830317568. Its totient is φ = 377041248000.

The previous prime is 1251540453967. The next prime is 1251540454037. The reversal of 1251540454010 is 104540451521.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19565339 + ... + 19629201.

It is an arithmetic number, because the mean of its divisors is an integer number (22678361856).

Almost surely, 2^{1251540454010} is an apocalyptic number.

1251540454010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1251540454010 is an abundant number, since it is smaller than the sum of its proper divisors (1651289863558).

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

1251540454010 is a wasteful number, since it uses less digits than its factorization.

1251540454010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64740.

The product of its (nonzero) digits is 16000, while the sum is 32.

The spelling of 1251540454010 in words is "one trillion, two hundred fifty-one billion, five hundred forty million, four hundred fifty-four thousand, ten".