40178745548 has 6 divisors (see below), whose sum is σ = 70312804716. Its totient is φ = 20089372772.

The previous prime is 40178745547. The next prime is 40178745583. The reversal of 40178745548 is 84554787104.

It is a super-2 number, since 2×40178745548² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40178745548.

It is not an unprimeable number, because it can be changed into a prime (40178745547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5022343190 + ... + 5022343197.

It is an arithmetic number, because the mean of its divisors is an integer number (11718800786).

Almost surely, 2^40178745548 is an apocalyptic number.

It is an amenable number.

40178745548 is a deficient number, since it is larger than the sum of its proper divisors (30134059168).

40178745548 is a wasteful number, since it uses less digits than its factorization.

40178745548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10044686391 (or 10044686389 counting only the distinct ones).

The product of its (nonzero) digits is 5017600, while the sum is 53.

The spelling of 40178745548 in words is "forty billion, one hundred seventy-eight million, seven hundred forty-five thousand, five hundred forty-eight".