40015553444 has 6 divisors (see below), whose sum is σ = 70027218534. Its totient is φ = 20007776720.

The previous prime is 40015553443. The next prime is 40015553449. The reversal of 40015553444 is 44435551004.

It can be written as a sum of positive squares in only one way, i.e., 23115553444 + 16900000000 = 152038^2 + 130000^2 .

It is a super-2 number, since 2×40015553444² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40015553443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5001944177 + ... + 5001944184.

It is an arithmetic number, because the mean of its divisors is an integer number (11671203089).

Almost surely, 2^40015553444 is an apocalyptic number.

It is an amenable number.

40015553444 is a deficient number, since it is larger than the sum of its proper divisors (30011665090).

40015553444 is a wasteful number, since it uses less digits than its factorization.

40015553444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10003888365 (or 10003888363 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 35.

The spelling of 40015553444 in words is "forty billion, fifteen million, five hundred fifty-three thousand, four hundred forty-four".