149720637780 has 216 divisors, whose sum is σ = 559376993448. Its totient is φ = 32208777216.

The previous prime is 149720637733. The next prime is 149720637799. The reversal of 149720637780 is 87736027941.

149720637780 is a `hidden beast` number, since 1 + 497 + 2 + 0 + 6 + 3 + 77 + 80 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 51076904004 + 98643733776 = 226002^2 + 314076^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 349329 + ... + 649208.

It is an arithmetic number, because the mean of its divisors is an integer number (2589708303).

Almost surely, 2^149720637780 is an apocalyptic number.

149720637780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149720637780 is an abundant number, since it is smaller than the sum of its proper divisors (409656355668).

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

149720637780 is a wasteful number, since it uses less digits than its factorization.

149720637780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998583 (or 998571 counting only the distinct ones).

The product of its (nonzero) digits is 3556224, while the sum is 54.

The spelling of 149720637780 in words is "one hundred forty-nine billion, seven hundred twenty million, six hundred thirty-seven thousand, seven hundred eighty".