1240691476398 has 64 divisors (see below), whose sum is σ = 2725457898240. Its totient is φ = 373407148800.

The previous prime is 1240691476393. The next prime is 1240691476399. The reversal of 1240691476398 is 8936741960421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240691476393) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 5584668 + ... + 5802576.

It is an arithmetic number, because the mean of its divisors is an integer number (42585279660).

Almost surely, 2^{1240691476398} is an apocalyptic number.

1240691476398 is an abundant number, since it is smaller than the sum of its proper divisors (1484766421842).

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

1240691476398 is a wasteful number, since it uses less digits than its factorization.

1240691476398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218513.

The product of its (nonzero) digits is 15676416, while the sum is 60.

The spelling of 1240691476398 in words is "one trillion, two hundred forty billion, six hundred ninety-one million, four hundred seventy-six thousand, three hundred ninety-eight".