1157772512220 has 48 divisors (see below), whose sum is σ = 3412382144640. Its totient is φ = 292489897536.

The previous prime is 1157772512213. The next prime is 1157772512231. The reversal of 1157772512220 is 222152777511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 507793822 + ... + 507796101.

It is an arithmetic number, because the mean of its divisors is an integer number (71091294680).

Almost surely, 2^{1157772512220} is an apocalyptic number.

1157772512220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1157772512220 is an abundant number, since it is smaller than the sum of its proper divisors (2254609632420).

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

1157772512220 is a wasteful number, since it uses less digits than its factorization.

1157772512220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015589954 (or 1015589952 counting only the distinct ones).

The product of its (nonzero) digits is 137200, while the sum is 42.

The spelling of 1157772512220 in words is "one trillion, one hundred fifty-seven billion, seven hundred seventy-two million, five hundred twelve thousand, two hundred twenty".