40851278949 has 32 divisors (see below), whose sum is σ = 62632120320. Its totient is φ = 23487000768.

The previous prime is 40851278929. The next prime is 40851278969. The reversal of 40851278949 is 94987215804.

It is an interprime number because it is at equal distance from previous prime (40851278929) and next prime (40851278969).

It is not a de Polignac number, because 40851278949 - 2¹¹ = 40851276901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40851278929) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 490989 + ... + 568130.

It is an arithmetic number, because the mean of its divisors is an integer number (1957253760).

Almost surely, 2^40851278949 is an apocalyptic number.

It is an amenable number.

40851278949 is a deficient number, since it is larger than the sum of its proper divisors (21780841371).

40851278949 is a wasteful number, since it uses less digits than its factorization.

40851278949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059201.

The product of its (nonzero) digits is 5806080, while the sum is 57.

The spelling of 40851278949 in words is "forty billion, eight hundred fifty-one million, two hundred seventy-eight thousand, nine hundred forty-nine".