40642445421654 has 32 divisors (see below), whose sum is σ = 81593343757824. Its totient is φ = 13496168458080.

The previous prime is 40642445421631. The next prime is 40642445421667. The reversal of 40642445421654 is 45612454424604.

It is a junction number, because it is equal to n+sod(n) for n = 40642445421597 and 40642445421606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10230292 + ... + 13636119.

It is an arithmetic number, because the mean of its divisors is an integer number (2549791992432).

Almost surely, 2^{40642445421654} is an apocalyptic number.

40642445421654 is an abundant number, since it is smaller than the sum of its proper divisors (40950898336170).

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

40642445421654 is a wasteful number, since it uses less digits than its factorization.

40642445421654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23867492.

The product of its (nonzero) digits is 14745600, while the sum is 51.

The spelling of 40642445421654 in words is "forty trillion, six hundred forty-two billion, four hundred forty-five million, four hundred twenty-one thousand, six hundred fifty-four".