40573215400820 has 24 divisors (see below), whose sum is σ = 90215737774344. Its totient is φ = 15274622268416.

The previous prime is 40573215400793. The next prime is 40573215400843. The reversal of 40573215400820 is 2800451237504.

It can be written as a sum of positive squares in 4 ways, for example, as 855036801124 + 39718178599696 = 924682^2 + 6302236^2 .

It is a super-2 number, since 2×40573215400820² (a number of 28 digits) contains 22 as substring.

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, 59666492897 + ... + 59666493576.

It is an arithmetic number, because the mean of its divisors is an integer number (3758989073931).

Almost surely, 2^{40573215400820} is an apocalyptic number.

It is an amenable number.

40573215400820 is an abundant number, since it is smaller than the sum of its proper divisors (49642522373524).

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

40573215400820 is a wasteful number, since it uses less digits than its factorization.

40573215400820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119332986499 (or 119332986497 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 41.

The spelling of 40573215400820 in words is "forty trillion, five hundred seventy-three billion, two hundred fifteen million, four hundred thousand, eight hundred twenty".