61001000511 has 16 divisors (see below), whose sum is σ = 88829943168. Its totient is φ = 36928130400.

The previous prime is 61001000471. The next prime is 61001000537. The reversal of 61001000511 is 11500010016.

It is not a de Polignac number, because 61001000511 - 2²³ = 60992611903 is a prime.

It is a super-2 number, since 2×61001000511² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61001005511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1024945 + ... + 1082826.

It is an arithmetic number, because the mean of its divisors is an integer number (5551871448).

Almost surely, 2^61001000511 is an apocalyptic number.

61001000511 is a deficient number, since it is larger than the sum of its proper divisors (27828942657).

61001000511 is a wasteful number, since it uses less digits than its factorization.

61001000511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2108662.

The product of its (nonzero) digits is 30, while the sum is 15.

Adding to 61001000511 its reverse (11500010016), we get a palindrome (72501010527).

It can be divided in two parts, 610010005 and 11, that added together give a palindrome (610010016).

The spelling of 61001000511 in words is "sixty-one billion, one million, five hundred eleven", and thus it is an aban number.