61405156227276 has 18 divisors (see below), whose sum is σ = 155218589352372. Its totient is φ = 20468385409080.

The previous prime is 61405156227271. The next prime is 61405156227281. The reversal of 61405156227276 is 67272265150416.

61405156227276 is a `hidden beast` number, since 6 + 1 + 4 + 0 + 5 + 1 + 5 + 622 + 7 + 2 + 7 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (61405156227271) and next prime (61405156227281).

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-3 number, since 3×61405156227276³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (61405156227271) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 852849392010 + ... + 852849392081.

Almost surely, 2^{61405156227276} is an apocalyptic number.

It is an amenable number.

61405156227276 is an abundant number, since it is smaller than the sum of its proper divisors (93813433125096).

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

61405156227276 is a wasteful number, since it uses less digits than its factorization.

61405156227276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705698784101 (or 1705698784096 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 54.

The spelling of 61405156227276 in words is "sixty-one trillion, four hundred five billion, one hundred fifty-six million, two hundred twenty-seven thousand, two hundred seventy-six".