40615742478 has 16 divisors (see below), whose sum is σ = 81352193616. Its totient is φ = 13518462720.

The previous prime is 40615742443. The next prime is 40615742549. The reversal of 40615742478 is 87424751604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5025153 + ... + 5033228.

It is an arithmetic number, because the mean of its divisors is an integer number (5084512101).

Almost surely, 2^40615742478 is an apocalyptic number.

40615742478 is an abundant number, since it is smaller than the sum of its proper divisors (40736451138).

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

40615742478 is a wasteful number, since it uses less digits than its factorization.

40615742478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10059059.

The product of its (nonzero) digits is 1505280, while the sum is 48.

The spelling of 40615742478 in words is "forty billion, six hundred fifteen million, seven hundred forty-two thousand, four hundred seventy-eight".