38720451145090 has 192 divisors, whose sum is σ = 88279753419648. Its totient is φ = 12049956864000.

The previous prime is 38720451145037. The next prime is 38720451145091. The reversal of 38720451145090 is 9054115402783.

It is a happy number.

It is a super-2 number, since 2×38720451145090² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38720451145091) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 26989890 + ... + 28388290.

It is an arithmetic number, because the mean of its divisors is an integer number (459790382394).

Almost surely, 2^{38720451145090} is an apocalyptic number.

38720451145090 is an abundant number, since it is smaller than the sum of its proper divisors (49559302274558).

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

38720451145090 is a wasteful number, since it uses less digits than its factorization.

38720451145090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398533 (or 1398516 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 49.

The spelling of 38720451145090 in words is "thirty-eight trillion, seven hundred twenty billion, four hundred fifty-one million, one hundred forty-five thousand, ninety".